Steam-trap valve.



S. V. SHAROOD.

STEAM TRAP VALVE.

APPLIUATION FILED 111111.23, 1911.

1,066,057, Patented 11115111913.-

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.UNITED sfrnrns SAMUEL V. SHLROOD, 0F BROCKTON, MASSACHUSETTS, SSIGNOR OF GIVE-'THIRD T0 GEORGE V. SCQTT, F BROCKTON, MASSACHUSETTS.

eraan-raar vn'nvn.

Specification of Letters Patent.

Application filedv March 28, 1911.

Patented July it 19113.

serial No. 617,451.

To all 'whom it may concern.'

Be it known that I, SAMUEL-V. SnARoon, citi-zen of the United States, residing at Brockton, in the county of Plymouth and State of Massachusetts, have invented certain new and useful Improvements in Steam-Trap Valves, of which the following is a speciicatlon.

My invention relates to valves and par- .ticularly toa valve adapted to act as a check valve in situations where it is desired -to preventthe escape of vapor or a iuid such'as steam, but permit the escape or passage of liquid such as water of condensation.

My invention is therefore particular y adaptedfor useas a steam trap.

Theprinciple' upon which my invention is .based is entirely unknown to me but I have found by practical experience that the device will operate as stated in the following specification, and this even though the outlet end of the valve is disposed irra vacuum.

The primary object of this invention` as above stated, is to provide a steam trap' of this character of a very .simple construction, preventing the escape of steam but permitting the escape'of water of condensation.

Anotherobject is to provide means i-n con'- nection with a valve of this character whereby the Water passing through the valve casing shall be caused to attain a high velocity creating a vacuum in the pipe to which the valve it attached and thusy relieving the pipe of condensed water in avery short time.

Another Objectis the provision of a valve of this character in which the body of the valve is in the form of a section of pipe, one end of which is adapted to be inserted into a pipe coupling T or elbow of common construction, thus permitting the valve body to be separately made and to be applied wherever desired, in a line of pipe without the necessity ot using expensive fittings for that purpose.

A further object is-the provision of means whereby the valve may be used in high presplace. Fig. 3 is a longitudinal sectional vlew of the modicationshown in Fig. 2. Fig. 4 is a side elevation ot another form ot" valve. Fig. 5 is a longitudinal section of a modified form of the valve body showing a modified form of the integral cones. Figs. 6, 7 and 8 are perspective views of the cones illustrated in Fig. 5 separated from the body of the valve.

Corresponding and like parts are referred to in the tollowing description and indicated in all the views of the accompanying drawing by the same reference characters.

Referring to Figs. 1 to 3 it will be seen that in this embodiment of my invention I provide a tubular valve body 2,4 consisting of a section of pipe of uniform diameter, one end of the pipe section being cut off at au inclination to the axis of the pipe, as at 3. The opposite ends of the pipe Vare screwthreaded as at 4 and 5.

The screw-threads 5 are adapted to be connected to a line of pipe /designated 6, while the screw-threads 4 per/Init the pipe section 2 to be inserted into' a pipe connection 7 which may be of ,any suitable 1form. In

p Fig. 1 this connection is shown as a T closed at one end bv a gap, the passage opposite the capbeing ada ted to be connected in a line of pipe.`-`I-d 'not Wish to be limited to any particular form for the member 7 as this member might be in the form of a straight pipe coupling it desired, provided it was large enough topermit the valvel8 to move ott of its seat.

As illustrated in Fig. 1 the end ofA the casing 2 is closed by a glug 9. This plug, it will be understood mig tbe-formed integral with the pipe section 2, which forms the body of the valve, or it may be screwthreaded andv afterward inserted into the end of the pipe section. This member 9 has an inclined face corresponding to the inclination of the end 3 of the pipe section. The inclined end of the pipe section is formed with lugs 1() to which the outwardly opening valve 8 is pivoted in any suitable manner. The valve 8 is in the form of a disk and is Het upon its inner face so as to lie at against the face of the plug 9.

In Fig. 1 the plug 9 is shown as being formed with a central .passage 11. This passage 11 is in the form of a double'cone, the assage contracting or tapering uniform y from the inner end face 12 of the` plug to a point 13 and then expanding uniformly to the face of the plug. It will be seen that the most contracted part 13 of the passage 11 is very much smaller than` the face of the valve and that lthe opening`14 of the passage is somewhat smaller than the valve, although larger than the most contracted portion 13 of the passage.

I have proved by numerous experiments that steam or like fluid passing through a construction of the character describedwill not act to open the valve, but instead will act'to holdit closed. The exact reason for this is'not known -to me but it is a -fact.

- 11 and passing out through the ,oriice14 will act to forcethe valve open, thus permitting the escape of liquid. I have found in practice that though the outlet end of the valve be inserted in a pipe having ten inches of vacuum, yet the valve vwill be held tightly to its seat, except where water is forced out. l Disposed within the pipe section 2 form- 25 'co-nes., I have shown two of these cones designated respectively 15 and 16. The small end of the cone 16 is inserted into the large end of'the cone 15 and t-he small end of the cone 15 is inserted into the large end 12 of the conical passage 11. These cones are so arranged however, that a space is left between t-he outer face f one cone and the inner face of the next adjacent cone so that a space surrounds the small end of t-he a cone 16 and the small end of the cone`15. The large ends of th'e cones 15 and 16 t the inside of the pipe section 2 and they ma be here formed so as to have a screw threa 40 ed engagement with the interior of the pipe section and preferably are provided withpaciingrings 17 for the purpose of holding the cones rigidly in place Aand with the axes ,ef the cones in alinement with the axis of the pipe 2 and in alinement with the`contracted end 13 of the passage 11. Each cone 15 and 16 is notched or grooved as at 18 so as to establish-communication between the spaces surrounding the cones and inclosed by the pipe section 2. It will thus be seen that communication is established between the pipe 6 and the spaces surrounding the several cones 29, 32 and 83, or the several cones 15 and 16. Located behind the relarmost lcone 16 is a screen 19 of wire gauze -or like material prevent-ing the projection of solid particles into the cones.

The operation of this form of my invention is as follows: Under normal circumstances steam will lill the pipe 2 and will be projected through the several cones and against the face of the valve 8. Steam, however, willnot open the valve but will cause` it to be held to its seat. When, however, the steam condenses,'water will ll the pipe 2 Liquid,l however, collected in the passage' ing the body of my valve are a., plurality of and the pipe 6 connected thereto and this -cones of an injector, that is, the water in passing through the cones attains relatively high've'locity. This produces a vacuum in the space surrounding the cones and as a consequence of these spaces being connected to the pipe, a vacuum will be produced in the` pipe to .which this valve is attached and thus helps to relieve the pipe of the condensed water in a relatively short space of time.- Where the valve is to be used with steam under high pressure, I seat within the oritice 14, and preferably flush wit.h\ the inlclined face of the plug 9, the disk 20, which disk is provided wit-h a plurality of relatively small openings 21. As shown there are three of these openings. I lind in practice that this permits my valve to be used under a high pressure of steam, .Ithe disk 2O acting as a reducer, reducing the size of the orifice 14, so that the high pressure under which the steam works will not act yto force open the valve.

.While I have shown the check-valve 8 as being a swing check valve vpivoted to the ears 10-I do not wish to limit myself to this Y as it is obvious that any other form of checkvalve might be used, thus for instance in Fig. 4 I show the extremity of the-pipesection 2 as being provided with an arm 22 which is mounted in any suitable manner upon the pipe section or within the casing 6, this arm extendingdown in front of the end ofthe pipe section 2 and being formed with a small perforation 23 in which plays a valve stern 24 carrying upon its end the check-valve 25 in the form of a relatively large plate or disk. This form of valve opcrates in precisely the same manner as the yswing check valve.

In Fig. 5 I show another form of the invention which, however, operates in precisely the same manner asv the form shown in Fig. l. In this form the body 25 of the valve is inserted in a T 26 closed in one end by a plug 27. The valve body 25 has an inclined end as previously described, thisend being closed in any suitable manner as by the plate 28. Instead of having the` first cone formed by providing a double conical' passage in the end of the valve body, I provide a separate cone designated 29 in Fig. 6.

This cone is contracted from its large end to a point 30 and is then expanded so as to project slightly through a central orifice in the plate '28. The large end of the 'cone is provided with screw-threads 31 whereby the cone may be screwed into place, the interior face of the pipe section 2 being also screw threaded. The cones 82 and 33 are con- 4() Y cone projectingv into the large end of the structedprecisely like the cones 15 and 16, previously-described and have a like relation4 to the first cone 29. The inlet end ofthe valve body is also provided with a screen 34 which is precisely the same as the screen 19 fo a like purpose. The object of this form of the invention is precisely the same asfthat previously described, and the ejecting orifice 29 may be closed by a plate 20, or not, as circumstances require. .Steam passing into the pipe from the body ofthe valve passing through the cones will be ejected against the face of the valve and will act to. draw the valve to its seat. Water, however, passing through the cones will be given a high velocity, and the valvev a hollow body'portio-n provided with an` outwardly expanded orifice at one end, a valve seating against-the body to close the orifice but movable away therefrom, and a series. of conically converging nozzles disposed in the body, the small ends of the I cones being directed toward the orifice.

2. In a valve ofthe character described, a hollowbody vprovided with an outwardly flared orifice at one end, a valvel seating against the body to close the orifice but movable away therefrom,A and 'a series of conically converging nozzles disposed 'in the body and having their small. ends directed toward the orifice,-the;contracted end of one next adjacent cone but being spaced therefrom.

rv3. In a valve of the character described,

.a hollow body provided withv an orifice at' one end, a valve seating against the body to close the orifice but movable away there- "from, and a series of conically `converging nozzles disposed in the body land having their small ends ldirected toward the orifice,

the largeends of the conesv filling thebody and dividingit -into a series of compartments communicating with eachother by l one end, a valve seating against the body to.

` peripheral passages. i i

Y 4. In a valve of the character descrlbed, a

hollow body provided with an orifice at close the orifice but movable away there- A `from, and aseries of conically converging- 601 nozzles disposed iny the body and having their small ends directed toward the orifice, the large ends ofthe cones extending en'- tirely across the bodyand dividing it into a seriesof compartments, the cones being provided with peripheral passages for establishing communication between the compartments. I Y

5. In a valve of the character described, hollow body provided with an orifice at one end, a valve seating against the body to close the orifice but movablel away therefrom, and a conically converging nozzle disposed within the body and having the-front end directed toward the orifice, the periphery of each nozzle having screw-threadedv engagement with the interior of the body.

'6. In a valve of the character described, a hollow body having adischargepassage uniformly contracted vfrom theinletend, and then expande-dto the discharge orifice of the passage, and a valve disk closingthe dis-V charge end ofthe passage but movable4 away therefrom. l

7. In a valve ofthe character described, a; hollow body having a discharge passage uni` formly contracted from the', inletv end 'and so I' then expanded to `the'outlety orificel of the" l passage, a seriesof conicallyconverging nozzles disposed within thebody and having. their front ends extendingtoward the said passage, the -front ends of' the" nozzles extending into the large endsfof the next adjacent nozzles, and a valvedisk closing the discharge end of the .passage but movable away therefrom. Y

8. In a valve of thev character described, .a

hollow body having a .discharge passage umformly contracted lfrom the' inlet endl and then expanded, a reducing disk located in the orifice of the passage .and having a plurality of relatively small perforations, and.

a valve closing the -discharge end of the passage but movableaway therefrom.

9. In a valve of the character ed at opposite ends, one end of the body being formed with a discharge passa e which is gradually contracted to a relative y small diameter and is then outwardly flared to the end face of the body, a plurality of conically 'converging nozzles carried within the tubular body, the small end of one nozzle being inserted in the large end of the next adjacent nozzle, said nozzles being directed toward and in alinemcnt with the discharge passage, a screen located at the inlet end of the tubular body, anda valve mounted upon 4 described, a l .hollow tubular body exteriorly screw threadthe face of the tubular body 'at vthe outletv end thereof and movable toward or away from the' discharge orifice.

In testimony whereof, I ailix my signature lin presence of two witnesses.

SAMUEL'V. SHAROOD. [n s.]. Witnessesz v JAMES-B. Hour,

AT. ALBERT TABER. 

